Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Early-strength liquid admixture for sprayed concrete and preparation method of early-strength liquid admixture
The invention discloses an early-strength liquid admixture for sprayed concrete and a preparation method of the early-strength liquid admixture, and belongs to the technical field of chemical additives of building materials. The early-strength liquid admixture comprises the following raw materials in percentage by mass: 5-10% of a water reducing component, 50-75% of a nano reinforcing component and the balance of water, wherein the active ingredient of the nano reinforcing component is nano calcium carbonate. The preparation method comprises the following steps: mixing the polycarboxylate superplasticizer and the nano-reinforced component with water, and uniformly stirring to obtain the early-strength liquid admixture for sprayed concrete. The prepared early strength liquid admixture has good stability, and when the early strength liquid admixture is used in sprayed concrete, the obtained concrete has high early strength, and the early strength liquid admixture is suitable for early stage rapid support engineering of tunnels with weak surrounding rocks and other shallow buried, bias pressure, rockburst, rich water and the like, and is suitable for wide popularization and application.
本发明公开了一种喷射混凝土用早强液体掺和料及其制备方法，属于建筑材料化学添加剂技术领域。所述早强液体掺和料包括以下质量分数的原料：减水组分5‑10％，纳米增强组分50‑75％，余量为水；其中，所述纳米增强组分的活性成分为纳米碳酸钙。制备方法为：将所述聚羧酸减水剂和纳米增强组分与水混合，搅拌均匀后，即得到所述喷射混凝土用早强液体掺和料。本发明制备的早强液体掺和料不仅具备较好的稳定性，而且将其用于喷射混凝土中时，得到的混凝土还具有较高的早期强度，适用于具有软弱围岩和其他浅埋、偏压、岩爆、富水等隧道的初期快速支护工程，适合被广泛地推广和应用。
Early-strength liquid admixture for sprayed concrete and preparation method of early-strength liquid admixture
The invention discloses an early-strength liquid admixture for sprayed concrete and a preparation method of the early-strength liquid admixture, and belongs to the technical field of chemical additives of building materials. The early-strength liquid admixture comprises the following raw materials in percentage by mass: 5-10% of a water reducing component, 50-75% of a nano reinforcing component and the balance of water, wherein the active ingredient of the nano reinforcing component is nano calcium carbonate. The preparation method comprises the following steps: mixing the polycarboxylate superplasticizer and the nano-reinforced component with water, and uniformly stirring to obtain the early-strength liquid admixture for sprayed concrete. The prepared early strength liquid admixture has good stability, and when the early strength liquid admixture is used in sprayed concrete, the obtained concrete has high early strength, and the early strength liquid admixture is suitable for early stage rapid support engineering of tunnels with weak surrounding rocks and other shallow buried, bias pressure, rockburst, rich water and the like, and is suitable for wide popularization and application.
本发明公开了一种喷射混凝土用早强液体掺和料及其制备方法，属于建筑材料化学添加剂技术领域。所述早强液体掺和料包括以下质量分数的原料：减水组分5‑10％，纳米增强组分50‑75％，余量为水；其中，所述纳米增强组分的活性成分为纳米碳酸钙。制备方法为：将所述聚羧酸减水剂和纳米增强组分与水混合，搅拌均匀后，即得到所述喷射混凝土用早强液体掺和料。本发明制备的早强液体掺和料不仅具备较好的稳定性，而且将其用于喷射混凝土中时，得到的混凝土还具有较高的早期强度，适用于具有软弱围岩和其他浅埋、偏压、岩爆、富水等隧道的初期快速支护工程，适合被广泛地推广和应用。
Early-strength liquid admixture for sprayed concrete and preparation method of early-strength liquid admixture
一种喷射混凝土用早强液体掺和料及其制备方法
LIU ZHAOYANG (Autor:in) / WANG YONGMEI (Autor:in) / ZHAO MINGMIN (Autor:in) / TENG WENSHENG (Autor:in) / FANG TAO (Autor:in) / WU WEI (Autor:in) / HUANG YUMEI (Autor:in) / ZHAO XUAN (Autor:in) / LIAN YANLI (Autor:in) / LU JUNYU (Autor:in)
22.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Early-strength admixture for sprayed concrete and use method of early-strength admixture
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024